General:
* Paper collector: This is the most straightforward and general term.
* Paper enthusiast: This implies a passion for paper, perhaps its history, texture, or unique qualities.
Specific types of paper:
* Philatelist: A collector of stamps (which are printed on paper).
* Bibliophile: A collector of books (which are made of paper).
* Manuscript collector: A collector of handwritten documents.
* Scrapbooker: A person who collects and preserves memories and images by pasting them into a book.
Other:
* Hoarder: This term is generally negative and should be used with caution, as it implies an excessive and potentially problematic collection.
* Archivist: A person who manages and preserves historical documents, including paper records.
* Paper conservator: A person who specializes in the preservation and restoration of paper artifacts.
The best term to use will depend on the specific context and the type of paper being collected.